Sintered electrodes for batteries and method of preparing same

Abstract

A sintered electrode for a battery, the sintered electrode having a first surface positioned to face a current collector and a second surface positioned to face an electrolyte layer, such that the sintered electrode includes: a lithium cobaltite chalcogenide compound; and such that the sintered electrode has a thickness between the first surface and the second surface of 45 μm to 55 μm; and such that the sintered electrode has an open porosity of from 15% to 30%.

What is claimed is: 
     
         1 . A sintered electrode for a battery, the sintered electrode having a first surface configured to be positioned facing a current collector and a second surface configured to be positioned facing an electrolyte layer, wherein the sintered electrode comprises:
 a lithium cobaltite chalcogenide compound;   wherein the sintered electrode has a thickness between the first surface and the second surface of 45 μm to 55 μm; and   wherein the sintered electrode has an open porosity of from 15% to 30%.   
     
     
         2 . The sintered electrode of  claim 1 , wherein the lithium cobaltite chalcogenide compound comprises a solid phase of the sintered electrode, wherein the open porosity comprises a pore phase which is continuous within the solid phase. 
     
     
         3 . The sintered electrode of  claim 1 , comprising a first phase and a second phase wherein the first phase comprises a chalcogenide compound and wherein the second phase is intermixed with the first phase. 
     
     
         4 . A battery structure comprising the sintered electrode of  claim 1 . 
     
     
         5 . The battery structure of  claim 4 , wherein a capacity of the battery structure is maintained at least 90% or greater after at least forty charge-discharge cycles at a C/3 rate and a charging potential in a range of 3.0 V and 4.2 V. 
     
     
         6 . The battery structure of  claim 4 , wherein the electrolyte layer comprises at least one of: lithium-phosphorous-oxynitride (LiPON), lithium garnet (Li 7 La 3 Zr 2 O 12 ), lithium hexafluorophosphate (LiPF 6 ), or lithium phosphosulfide. 
     
     
         7 . The battery structure of  claim 4 , further comprising at least one of a wave spring or a cone spring configured to compress together components of the battery structure.